81. The International Date Line makes slight deviation from 180° meridian so that it ________
82. Latitude of place is indicative of its ________
83. Dolomite is a/an
84. Which one of the following has geographical position of 0° latitude and 0° longitude?
85. What is the approximate circumference of Earth?
86. 'Green House Effect' means ________
87. Tides are caused by the gravitational forces of
88. What is the alternate name for contour lines?
89. 1° of latitude is equal to
90. Equinox occurs when the Sun is vertically above
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